The colours and font settings that the Adaptable Blotter uses are set using a Theme which acts as a 'skin'.
Adaptable Blotter ships with 2 themes - "Light Theme" and "Dark Theme", but works with any Bootstrap compliant theme.
If you don't like either of the pre-installed Themes you can choose to use your own custom theme instead.
Any Bootstrap theme will be suitable.
You specify your themes using config (see Theme Config for more information).
You can change the theme either through the Theme Popup or the Theme Function Toolbar.